Finding the Fourth Proportional to 74,531.20, 102,852.16 and 40,997.12
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Solution
The fourth proportional to 74,531.20, 102,852.16 and 40,997.12 is: 56,575.53
Step by Step Solution
- Step 1: Write the proportion equation
74,531.20 : 102,852.16 = 40,997.12 : x - Step 2: Convert to fraction form
74,531.20/102,852.16 = 40,997.12/x - Step 3: Cross multiply
74,531.20x = 102,852.16 × 40,997.12 - Step 4: Simplify right side
74,531.20x = 4,216,642,345.78 - Step 5: Solve for x
x = 4,216,642,345.78/74,531.20 - Step 6: Final answer
x = 56,575.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.